1. Bananas On a Boat: Bringing a banana on a boat has long been thought to be unlucky. The superstition started with fishermen who believed that the presence of a banana would bring bad luck for that day's catch. Others take the myth more seriously, thinking that a banana on a boat will bring death. According to the Los Angeles Times, modern day sailors and boaters are still extremely superstitious when it comes to bananas. Many captains go a step further than banning the yellow fruit, and also prohibit Banana Republic and Fruit of the Loom clothing.